When a publisher who signed up for Google AdSense through your referral earns their first $5 within 180 days of sign-up, you will be credited with $5.

When that same publisher earns $100 within 180 days of sign-up and is eligible for payment, you will be credited with an additional $250.

If, in any 180-day period, you refer 25 publishers who each earn more than $100 within 180 days of their respective sign-ups and are all eligible for payout, you will be awarded a $2,000 bonus (bonus payouts are limited to 1 per year).

AdWords Referrals:

When an advertiser you refer spends $5 within 90 days of sign-up (in addition to the $5 sign-up fee) you will be credited with $5.

When that same advertiser spends $100 within 90 days of sign-up, you will be credited with an additional $40.

If, in any 180 day period, you refer 20 advertisers who each spend more than $100 within 90 days of their respective sign-ups, you will be awarded a $600 bonus (bonus payments are limited to 1 per year).

What I like about the changes in Adsense Referrals is the $5 credit. Google has definitely made it more within reach for publishers like me. And there is the $2000 bonus per year, which offcourse will take some doing.

Tech Xpress hasn't used these two referrals considerably to monetize. The Adsense referrals may have been used for a few hours but nothing really came out of it.

These changes also apply to users already referred by publishers, but have not reached the new thresholds yet.